WASHINGTON — Actions by President Trump and his administration have created a historic ethics crisis, the departing head of the Office of Government Ethics said. He called for major changes in federal law to expand the power and reach of the oversight office and combat the threat.

Walter M. Shaub Jr., who is resigning as the federal government’s top ethics watchdog on Tuesday, said the Trump administration had flouted or directly challenged long-accepted norms in a way that threatened to undermine the United States’ ethical standards, which have been admired around the world.

“It’s hard for the United States to pursue international anticorruption and ethics initiatives when we’re not even keeping our own side of the street clean. It affects our credibility,” Mr. Shaub said in a two-hour interview this past weekend — a weekend Mr. Trump let the world know he was spending at a family-owned golf club that was being paid to host the U.S. Women’s Open tournament. “I think we are pretty close to a laughingstock at this point.”

Mr. Shaub called for nearly a dozen legal changes to strengthen the federal ethics system: changes that, in many cases, he had not considered necessary before Mr. Trump’s election. Every other president since the 1970s, Republican or Democrat, worked closely with the ethics office, he said.

If we forced people to sell everything to become President we will be left with only political families, community organizers, life long politicians and Lawyers... I will take a capitalist leading the country everytime....

If we forced people to sell everything to become President we will be left with only political families, community organizers, life long politicians and Lawyers... I will take a capitalist leading the country everytime....